<template>
  <div class="app-header-sticky" :class="{ show: y >= 78 }">
    <div class="container">
      <RouterLink class="logo" to="/" />
      <AppHeaderNav />
      <div class="right">
        <RouterLink to="/">品牌</RouterLink>
        <RouterLink to="/">专题</RouterLink>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { onMounted, ref } from 'vue'
const y = ref(0)
onMounted(() => {
  window.addEventListener('scroll', () => {
    // 获取页面卷去的高度
    const scrollTop = document.documentElement.scrollTop
    y.value = scrollTop
  })
})
</script>

<style scoped lang="less">
.app-header-sticky {
  width: 100%;
  height: 80px;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 999;
  background-color: #fff;
  border-bottom: 1px solid #e4e4e4;
  transform: translateY(-100%);
  opacity: 0;

  &.show {
    transition: all 0.3s linear;
    transform: none;
    opacity: 1;

    .container {
      display: flex;
      align-items: center;
    }

    .logo {
      width: 200px;
      height: 80px;
      background: url('http://erabbit.itheima.net/img/logo.0940ebb5.png')
        no-repeat right 2px;
      background-size: 160px auto;
    }

    .right {
      width: 220px;
      display: flex;
      text-align: center;
      padding-left: 40px;
      border-left: 2px solid @xtxColor;

      a {
        width: 38px;
        margin-right: 40px;
        font-size: 16px;
        line-height: 1;

        &:hover {
          color: @xtxColor;
        }
      }
    }
  }
}
</style>
